7x^2-47x+14=0

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Solution for 7x^2-47x+14=0 equation:


Simplifying
7x2 + -47x + 14 = 0

Reorder the terms:
14 + -47x + 7x2 = 0

Solving
14 + -47x + 7x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
7 the coefficient of the squared term: 

Divide each side by '7'.
2 + -6.714285714x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -6.714285714x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + -6.714285714x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -6.714285714x + x2 = 0 + -2
-6.714285714x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
-6.714285714x + x2 = -2

The x term is -6.714285714x.  Take half its coefficient (-3.357142857).
Square it (11.27040816) and add it to both sides.

Add '11.27040816' to each side of the equation.
-6.714285714x + 11.27040816 + x2 = -2 + 11.27040816

Reorder the terms:
11.27040816 + -6.714285714x + x2 = -2 + 11.27040816

Combine like terms: -2 + 11.27040816 = 9.27040816
11.27040816 + -6.714285714x + x2 = 9.27040816

Factor a perfect square on the left side:
(x + -3.357142857)(x + -3.357142857) = 9.27040816

Calculate the square root of the right side: 3.044734497

Break this problem into two subproblems by setting 
(x + -3.357142857) equal to 3.044734497 and -3.044734497.

Subproblem 1

x + -3.357142857 = 3.044734497 Simplifying x + -3.357142857 = 3.044734497 Reorder the terms: -3.357142857 + x = 3.044734497 Solving -3.357142857 + x = 3.044734497 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.357142857' to each side of the equation. -3.357142857 + 3.357142857 + x = 3.044734497 + 3.357142857 Combine like terms: -3.357142857 + 3.357142857 = 0.000000000 0.000000000 + x = 3.044734497 + 3.357142857 x = 3.044734497 + 3.357142857 Combine like terms: 3.044734497 + 3.357142857 = 6.401877354 x = 6.401877354 Simplifying x = 6.401877354

Subproblem 2

x + -3.357142857 = -3.044734497 Simplifying x + -3.357142857 = -3.044734497 Reorder the terms: -3.357142857 + x = -3.044734497 Solving -3.357142857 + x = -3.044734497 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.357142857' to each side of the equation. -3.357142857 + 3.357142857 + x = -3.044734497 + 3.357142857 Combine like terms: -3.357142857 + 3.357142857 = 0.000000000 0.000000000 + x = -3.044734497 + 3.357142857 x = -3.044734497 + 3.357142857 Combine like terms: -3.044734497 + 3.357142857 = 0.31240836 x = 0.31240836 Simplifying x = 0.31240836

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.401877354, 0.31240836}

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